Quest-for-the-Missing-Dust SPIRE500 survey collection

Because the galaxies of the Local Group have such large angular sizes, much of their diffuse, large-angular-scale emission is filtered out by the Herschel data reduction...由于本星系群（Local Group）内的星系拥有极大的角大小，其绝大多数弥散性大角尺度辐射会在赫歇尔（Herschel）的数据归约流程中被滤除。